Damping system for mechanical shutter
US6652165B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2002 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Aug 24, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B9/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A damping system for an electromagnetically operable shutter includes a detent for arresting the motion of a pivotally supported shutter actuating drive arm. The detent has damper portions that are fixed to the pivotally supported drive arm and bumper portions that are fixed t positions to receive the impact of the dampers as the arm is pivoted in one direction or another to operate the shutter. The damper portions each has a straight edge and the surface of each bumper portion is curved so as to maintain substantially a point contact between the two throughout the duration of the impact. In addition the damper portions are formed of a damped polyurethane and each bumper portion is formed of an ultra high molecular weight polyethylene, the combination of materials providing energy absorption while avoiding the adherence of damper and bumper portions upon impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.